Parabolas (Sec 9-4)

Question 1

Which statements describe a parabola? Check all that apply.A parabola is the set of all points equidistant from the directrix and focus.The fixed line is called the vertex of a parabola.The focus is a fixed point inside the parabola.The line of symmetry intersects the focus and directrix.The line of symmetry and the directrix are perpendicular.The parabola intersects the directrix.

Revolt · Accepted Answer

A parabola is the set of all points equidistant from the directrix and focus.; The focus is a fixed point inside the parabola.; The line of symmetry intersects the focus and directrix.; The line of symmetry and the directrix are perpendicular.

Question 2

The coordinates of the focus are .

Revolt · Accepted Answer

(–1,0)

Question 3

The equation of the directrix is .

Revolt · Accepted Answer

x = 1

Parabolas (Sec 9-4) Answers

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